You are obviously not old enough to remember the days before computerised offices (I am). In fact they ran far more efficiently than most modern offices. People were far more relaxed, less stressed and much more efficient than today.

Not only am I old enough to remember non computerised offices, I've been involved in the transition of two large organisations to a computerised system.

I've directly seen how much time, effort and money can be saved with a well designed computer system. As well as the new services it's possible to offer customers, such as providing up to the minute information over the telephone thanks to a database system. Organisations didn't switch to computers on a whim, but out of a need to compete with those who already had the benefit of them.

In my experience the relaxed and efficient manual offices you describe never existed. They had just as much stress, while requiring twice as many staff to get the same job done. You're clearly looking back with rose tinted glasses.